Near-unity indistinguishability single photon source for large-scale integrated quantum optics

Abstract

Integrated single photon sources are key building blocks for realizing scalable devices for quantum information processing. For such applications highly coherent and indistinguishable single photons on a chip are required. Here we report on a triggered resonance fluorescence single photon source based on In(Ga)As/GaAs quantum dots coupled to single- and multi-mode ridge waveguides. We demonstrate the generation of highly linearly polarized resonance fluorescence photons with 99.1% (96.0%) single-photon purity and 97.5% (95.0%) indistinguishability in case of multi-mode (single-mode) waveguide devices fulfilling the strict requirements imposed by multi-interferometric quantum optics applications. Our integrated triggered single photon source can be readily scaled up, promising a realistic pathway for on-chip linear optical quantum simulation, quantum computation and quantum networks.

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• Hybrid integration methods for on-chip quantum photonics
• Triggered single-photon generation and resonance fluorescence in ultra-low loss integrated photonic circuits
• Exciton-Photonics: From Fundamental Science to Applications
• Purcell enhanced and indistinguishable single-photon generation from quantum dots coupled to on-chip integrated ring resonators
• Integrated Single Photon Emitters
• Photon Statistics of Filtered Resonance Fluorescence
• Double-Pulse Generation of Indistinguishable Single Photons with Optically Controlled Polarization
• Efficient Pulse-Excitation Techniques for Single Photon Sources from Quantum Dots in Cavities
• Quantum Antennas
• Entanglement and scattering in quantum electrodynamics: S-matrix information from an entangled spectator particle
• Optical estimation of unitary Gaussian processes without phase reference using Fock states
• High-resolution spectroscopy of a quantum dot driven bichromatically by two strong coherent fields
• All-optical Tuning of Indistinguishable Single-Photons Generated in Three-level Quantum Systems
• Selection rules for the excitation of quantum dots by spatially structured light beams -- Application to the reconstruction of higher excited exciton wave functions
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• Distinguishability theory for time-resolved photodetection and boson sampling
• On-chip nanomechanical filtering of quantum-dot single-photon sources
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• Almost indistinguishable single photons via multiplexing cascaded biphotons with cavity modulation and phase compensation
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• Spin-photon Qubits for Scalable Quantum Network
• Nonorthogonal coding in spectrally-entangled photons
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